Gatsby Jewellery Ltd has dated this piece to the 1920s.

Cut – Old mine cut.
Colour – I.
Clarity – SI2.
Carat – Approximately 0.25.
Circa – 1920.
Size – O 1/2 (UK) or 7.25 (US). Complimentary sizing is available, can go up or down.
Measurements – The head of the ring is 5.9 x5.7mm. Sits 4.6mm from the finger.
Metal – 18k yellow gold and platinum. Tested.
Gatsby Jewellery Ltd has dated this piece to the 1920s.
Gatsby jewellery are a husband and wife team who have years of knowledge and experience in dealing in fine antique jewellery.
You can view the stock and full dealer information on the Gatsby Jewellery Ltd Profile Page